drivers/net/ethernet/qlogic/qed/qed_sriov.h

   1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
   2 /* QLogic qed NIC Driver
   3  * Copyright (c) 2015-2017  QLogic Corporation
   4  * Copyright (c) 2019-2020 Marvell International Ltd.
   5  */
   6
   7 #ifndef _QED_SRIOV_H
   8 #define _QED_SRIOV_H
   9 #include <linux/types.h>
  10 #include "qed_vf.h"
  11
  12 #define QED_ETH_VF_NUM_MAC_FILTERS 1
  13 #define QED_ETH_VF_NUM_VLAN_FILTERS 2
  14 #define QED_VF_ARRAY_LENGTH (3)
  15
  16 #ifdef CONFIG_QED_SRIOV
  17 #define IS_VF(cdev)             ((cdev)->b_is_vf)
  18 #define IS_PF(cdev)             (!((cdev)->b_is_vf))
  19 #define IS_PF_SRIOV(p_hwfn)     (!!((p_hwfn)->cdev->p_iov_info))
  20 #else
  21 #define IS_VF(cdev)             (0)
  22 #define IS_PF(cdev)             (1)
  23 #define IS_PF_SRIOV(p_hwfn)     (0)
  24 #endif
  25 #define IS_PF_SRIOV_ALLOC(p_hwfn)       (!!((p_hwfn)->pf_iov_info))
  26
  27 #define QED_MAX_VF_CHAINS_PER_PF 16
  28
  29 #define QED_ETH_MAX_VF_NUM_VLAN_FILTERS \
  30         (MAX_NUM_VFS * QED_ETH_VF_NUM_VLAN_FILTERS)
  31
  32 enum qed_iov_vport_update_flag {
  33         QED_IOV_VP_UPDATE_ACTIVATE,
  34         QED_IOV_VP_UPDATE_VLAN_STRIP,
  35         QED_IOV_VP_UPDATE_TX_SWITCH,
  36         QED_IOV_VP_UPDATE_MCAST,
  37         QED_IOV_VP_UPDATE_ACCEPT_PARAM,
  38         QED_IOV_VP_UPDATE_RSS,
  39         QED_IOV_VP_UPDATE_ACCEPT_ANY_VLAN,
  40         QED_IOV_VP_UPDATE_SGE_TPA,
  41         QED_IOV_VP_UPDATE_MAX,
  42 };
  43
  44 struct qed_public_vf_info {
  45         /* These copies will later be reflected in the bulletin board,
  46          * but this copy should be newer.
  47          */
  48         u8 forced_mac[ETH_ALEN];
  49         u16 forced_vlan;
  50         u8 mac[ETH_ALEN];
  51
  52         /* IFLA_VF_LINK_STATE_<X> */
  53         int link_state;
  54
  55         /* Currently configured Tx rate in MB/sec. 0 if unconfigured */
  56         int tx_rate;
  57
  58         /* Trusted VFs can configure promiscuous mode.
  59          * Also store shadow promisc configuration if needed.
  60          */
  61         bool is_trusted_configured;
  62         bool is_trusted_request;
  63         u8 rx_accept_mode;
  64         u8 tx_accept_mode;
  65 };
  66
  67 struct qed_iov_vf_init_params {
  68         u16 rel_vf_id;
  69
  70         /* Number of requested Queues; Currently, don't support different
  71          * number of Rx/Tx queues.
  72          */
  73
  74         u16 num_queues;
  75
  76         /* Allow the client to choose which qzones to use for Rx/Tx,
  77          * and which queue_base to use for Tx queues on a per-queue basis.
  78          * Notice values should be relative to the PF resources.
  79          */
  80         u16 req_rx_queue[QED_MAX_VF_CHAINS_PER_PF];
  81         u16 req_tx_queue[QED_MAX_VF_CHAINS_PER_PF];
  82 };
  83
  84 /* This struct is part of qed_dev and contains data relevant to all hwfns;
  85  * Initialized only if SR-IOV cpabability is exposed in PCIe config space.
  86  */
  87 struct qed_hw_sriov_info {
  88         int pos;                /* capability position */
  89         int nres;               /* number of resources */
  90         u32 cap;                /* SR-IOV Capabilities */
  91         u16 ctrl;               /* SR-IOV Control */
  92         u16 total_vfs;          /* total VFs associated with the PF */
  93         u16 num_vfs;            /* number of vfs that have been started */
  94         u16 initial_vfs;        /* initial VFs associated with the PF */
  95         u16 nr_virtfn;          /* number of VFs available */
  96         u16 offset;             /* first VF Routing ID offset */
  97         u16 stride;             /* following VF stride */
  98         u16 vf_device_id;       /* VF device id */
  99         u32 pgsz;               /* page size for BAR alignment */
 100         u8 link;                /* Function Dependency Link */
 101
 102         u32 first_vf_in_pf;
 103 };
 104
 105 /* This mailbox is maintained per VF in its PF contains all information
 106  * required for sending / receiving a message.
 107  */
 108 struct qed_iov_vf_mbx {
 109         union vfpf_tlvs *req_virt;
 110         dma_addr_t req_phys;
 111         union pfvf_tlvs *reply_virt;
 112         dma_addr_t reply_phys;
 113
 114         /* Address in VF where a pending message is located */
 115         dma_addr_t pending_req;
 116
 117         /* Message from VF awaits handling */
 118         bool b_pending_msg;
 119
 120         u8 *offset;
 121
 122         /* saved VF request header */
 123         struct vfpf_first_tlv first_tlv;
 124 };
 125
 126 #define QED_IOV_LEGACY_QID_RX (0)
 127 #define QED_IOV_LEGACY_QID_TX (1)
 128 #define QED_IOV_QID_INVALID (0xFE)
 129
 130 struct qed_vf_queue_cid {
 131         bool b_is_tx;
 132         struct qed_queue_cid *p_cid;
 133 };
 134
 135 /* Describes a qzone associated with the VF */
 136 struct qed_vf_queue {
 137         u16 fw_rx_qid;
 138         u16 fw_tx_qid;
 139
 140         struct qed_vf_queue_cid cids[MAX_QUEUES_PER_QZONE];
 141 };
 142
 143 enum vf_state {
 144         VF_FREE = 0,            /* VF ready to be acquired holds no resc */
 145         VF_ACQUIRED,            /* VF, acquired, but not initalized */
 146         VF_ENABLED,             /* VF, Enabled */
 147         VF_RESET,               /* VF, FLR'd, pending cleanup */
 148         VF_STOPPED              /* VF, Stopped */
 149 };
 150
 151 struct qed_vf_vlan_shadow {
 152         bool used;
 153         u16 vid;
 154 };
 155
 156 struct qed_vf_shadow_config {
 157         /* Shadow copy of all guest vlans */
 158         struct qed_vf_vlan_shadow vlans[QED_ETH_VF_NUM_VLAN_FILTERS + 1];
 159
 160         /* Shadow copy of all configured MACs; Empty if forcing MACs */
 161         u8 macs[QED_ETH_VF_NUM_MAC_FILTERS][ETH_ALEN];
 162         u8 inner_vlan_removal;
 163 };
 164
 165 /* PFs maintain an array of this structure, per VF */
 166 struct qed_vf_info {
 167         struct qed_iov_vf_mbx vf_mbx;
 168         enum vf_state state;
 169         bool b_init;
 170         bool b_malicious;
 171         u8 to_disable;
 172
 173         struct qed_bulletin bulletin;
 174         dma_addr_t vf_bulletin;
 175
 176         /* PF saves a copy of the last VF acquire message */
 177         struct vfpf_acquire_tlv acquire;
 178
 179         u32 concrete_fid;
 180         u16 opaque_fid;
 181         u16 mtu;
 182
 183         u8 vport_id;
 184         u8 relative_vf_id;
 185         u8 abs_vf_id;
 186 #define QED_VF_ABS_ID(p_hwfn, p_vf)     (QED_PATH_ID(p_hwfn) ?                \
 187                                          (p_vf)->abs_vf_id + MAX_NUM_VFS_BB : \
 188                                          (p_vf)->abs_vf_id)
 189
 190         u8 vport_instance;
 191         u8 num_rxqs;
 192         u8 num_txqs;
 193
 194         u16 rx_coal;
 195         u16 tx_coal;
 196
 197         u8 num_sbs;
 198
 199         u8 num_mac_filters;
 200         u8 num_vlan_filters;
 201
 202         struct qed_vf_queue vf_queues[QED_MAX_VF_CHAINS_PER_PF];
 203         u16 igu_sbs[QED_MAX_VF_CHAINS_PER_PF];
 204         u8 num_active_rxqs;
 205         struct qed_public_vf_info p_vf_info;
 206         bool spoof_chk;
 207         bool req_spoofchk_val;
 208
 209         /* Stores the configuration requested by VF */
 210         struct qed_vf_shadow_config shadow_config;
 211
 212         /* A bitfield using bulletin's valid-map bits, used to indicate
 213          * which of the bulletin board features have been configured.
 214          */
 215         u64 configured_features;
 216 #define QED_IOV_CONFIGURED_FEATURES_MASK        ((1 << MAC_ADDR_FORCED) | \
 217                                                  (1 << VLAN_ADDR_FORCED))
 218 };
 219
 220 /* This structure is part of qed_hwfn and used only for PFs that have sriov
 221  * capability enabled.
 222  */
 223 struct qed_pf_iov {
 224         struct qed_vf_info vfs_array[MAX_NUM_VFS];
 225         u64 pending_flr[QED_VF_ARRAY_LENGTH];
 226
 227         /* Allocate message address continuosuly and split to each VF */
 228         void *mbx_msg_virt_addr;
 229         dma_addr_t mbx_msg_phys_addr;
 230         u32 mbx_msg_size;
 231         void *mbx_reply_virt_addr;
 232         dma_addr_t mbx_reply_phys_addr;
 233         u32 mbx_reply_size;
 234         void *p_bulletins;
 235         dma_addr_t bulletins_phys;
 236         u32 bulletins_size;
 237 };
 238
 239 enum qed_iov_wq_flag {
 240         QED_IOV_WQ_MSG_FLAG,
 241         QED_IOV_WQ_SET_UNICAST_FILTER_FLAG,
 242         QED_IOV_WQ_BULLETIN_UPDATE_FLAG,
 243         QED_IOV_WQ_STOP_WQ_FLAG,
 244         QED_IOV_WQ_FLR_FLAG,
 245         QED_IOV_WQ_TRUST_FLAG,
 246         QED_IOV_WQ_VF_FORCE_LINK_QUERY_FLAG,
 247 };
 248
 249 extern const struct qed_iov_hv_ops qed_iov_ops_pass;
 250
 251 #ifdef CONFIG_QED_SRIOV
 252 /**
 253  * @brief Check if given VF ID @vfid is valid
 254  *        w.r.t. @b_enabled_only value
 255  *        if b_enabled_only = true - only enabled VF id is valid
 256  *        else any VF id less than max_vfs is valid
 257  *
 258  * @param p_hwfn
 259  * @param rel_vf_id - Relative VF ID
 260  * @param b_enabled_only - consider only enabled VF
 261  * @param b_non_malicious - true iff we want to validate vf isn't malicious.
 262  *
 263  * @return bool - true for valid VF ID
 264  */
 265 bool qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
 266                            int rel_vf_id,
 267                            bool b_enabled_only, bool b_non_malicious);
 268
 269 /**
 270  * @brief - Given a VF index, return index of next [including that] active VF.
 271  *
 272  * @param p_hwfn
 273  * @param rel_vf_id
 274  *
 275  * @return MAX_NUM_VFS in case no further active VFs, otherwise index.
 276  */
 277 u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn, u16 rel_vf_id);
 278
 279 void qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn,
 280                                     int vfid, u16 vxlan_port, u16 geneve_port);
 281
 282 /**
 283  * @brief Read sriov related information and allocated resources
 284  *  reads from configuration space, shmem, etc.
 285  *
 286  * @param p_hwfn
 287  *
 288  * @return int
 289  */
 290 int qed_iov_hw_info(struct qed_hwfn *p_hwfn);
 291
 292 /**
 293  * @brief qed_add_tlv - place a given tlv on the tlv buffer at next offset
 294  *
 295  * @param p_hwfn
 296  * @param p_iov
 297  * @param type
 298  * @param length
 299  *
 300  * @return pointer to the newly placed tlv
 301  */
 302 void *qed_add_tlv(struct qed_hwfn *p_hwfn, u8 **offset, u16 type, u16 length);
 303
 304 /**
 305  * @brief list the types and lengths of the tlvs on the buffer
 306  *
 307  * @param p_hwfn
 308  * @param tlvs_list
 309  */
 310 void qed_dp_tlv_list(struct qed_hwfn *p_hwfn, void *tlvs_list);
 311
 312 /**
 313  * @brief qed_iov_alloc - allocate sriov related resources
 314  *
 315  * @param p_hwfn
 316  *
 317  * @return int
 318  */
 319 int qed_iov_alloc(struct qed_hwfn *p_hwfn);
 320
 321 /**
 322  * @brief qed_iov_setup - setup sriov related resources
 323  *
 324  * @param p_hwfn
 325  */
 326 void qed_iov_setup(struct qed_hwfn *p_hwfn);
 327
 328 /**
 329  * @brief qed_iov_free - free sriov related resources
 330  *
 331  * @param p_hwfn
 332  */
 333 void qed_iov_free(struct qed_hwfn *p_hwfn);
 334
 335 /**
 336  * @brief free sriov related memory that was allocated during hw_prepare
 337  *
 338  * @param cdev
 339  */
 340 void qed_iov_free_hw_info(struct qed_dev *cdev);
 341
 342 /**
 343  * @brief Mark structs of vfs that have been FLR-ed.
 344  *
 345  * @param p_hwfn
 346  * @param disabled_vfs - bitmask of all VFs on path that were FLRed
 347  *
 348  * @return true iff one of the PF's vfs got FLRed. false otherwise.
 349  */
 350 bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *disabled_vfs);
 351
 352 /**
 353  * @brief Search extended TLVs in request/reply buffer.
 354  *
 355  * @param p_hwfn
 356  * @param p_tlvs_list - Pointer to tlvs list
 357  * @param req_type - Type of TLV
 358  *
 359  * @return pointer to tlv type if found, otherwise returns NULL.
 360  */
 361 void *qed_iov_search_list_tlvs(struct qed_hwfn *p_hwfn,
 362                                void *p_tlvs_list, u16 req_type);
 363
 364 void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first);
 365 int qed_iov_wq_start(struct qed_dev *cdev);
 366
 367 void qed_schedule_iov(struct qed_hwfn *hwfn, enum qed_iov_wq_flag flag);
 368 void qed_vf_start_iov_wq(struct qed_dev *cdev);
 369 int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled);
 370 void qed_inform_vf_link_state(struct qed_hwfn *hwfn);
 371 #else
 372 static inline bool
 373 qed_iov_is_valid_vfid(struct qed_hwfn *p_hwfn,
 374                       int rel_vf_id, bool b_enabled_only, bool b_non_malicious)
 375 {
 376         return false;
 377 }
 378
 379 static inline u16 qed_iov_get_next_active_vf(struct qed_hwfn *p_hwfn,
 380                                              u16 rel_vf_id)
 381 {
 382         return MAX_NUM_VFS;
 383 }
 384
 385 static inline void
 386 qed_iov_bulletin_set_udp_ports(struct qed_hwfn *p_hwfn, int vfid,
 387                                u16 vxlan_port, u16 geneve_port)
 388 {
 389 }
 390
 391 static inline int qed_iov_hw_info(struct qed_hwfn *p_hwfn)
 392 {
 393         return 0;
 394 }
 395
 396 static inline int qed_iov_alloc(struct qed_hwfn *p_hwfn)
 397 {
 398         return 0;
 399 }
 400
 401 static inline void qed_iov_setup(struct qed_hwfn *p_hwfn)
 402 {
 403 }
 404
 405 static inline void qed_iov_free(struct qed_hwfn *p_hwfn)
 406 {
 407 }
 408
 409 static inline void qed_iov_free_hw_info(struct qed_dev *cdev)
 410 {
 411 }
 412
 413 static inline bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn,
 414                                        u32 *disabled_vfs)
 415 {
 416         return false;
 417 }
 418
 419 static inline void qed_iov_wq_stop(struct qed_dev *cdev, bool schedule_first)
 420 {
 421 }
 422
 423 static inline int qed_iov_wq_start(struct qed_dev *cdev)
 424 {
 425         return 0;
 426 }
 427
 428 static inline void qed_schedule_iov(struct qed_hwfn *hwfn,
 429                                     enum qed_iov_wq_flag flag)
 430 {
 431 }
 432
 433 static inline void qed_vf_start_iov_wq(struct qed_dev *cdev)
 434 {
 435 }
 436
 437 static inline int qed_sriov_disable(struct qed_dev *cdev, bool pci_enabled)
 438 {
 439         return 0;
 440 }
 441
 442 static inline void qed_inform_vf_link_state(struct qed_hwfn *hwfn)
 443 {
 444 }
 445 #endif
 446
 447 #define qed_for_each_vf(_p_hwfn, _i)                      \
 448         for (_i = qed_iov_get_next_active_vf(_p_hwfn, 0); \
 449              _i < MAX_NUM_VFS;                            \
 450              _i = qed_iov_get_next_active_vf(_p_hwfn, _i + 1))
 451
 452 #endif